2006 MITSUBISHI LANCER Workshop Manual

IGNITION SYSTEM
ENGINE ELECTRICAL16-35
Observation Conditions (The only change from above condition is the pattern selector.)
Pattern selectorDisplay
AKX01275
kV
Secondary ignition
voltage wave pattern 0
2NO. 1 cylinder
NO. 3 cylinder
ignition noise
Newtral section NO. 4 cylinder
NO. 2 cylinder
ignition noise
Time
AC
WA VEFORM OBSER V A T ION POINTS
Point A: The he ight, len g th and s l ope of th e sp a r k line sho w the following trends (Re f er to abnorma l
wave
form exam ples, 1 , 2, 3 a nd 4).
Spark linePlug gapCondition of
electrodeCompression
force Concentration
of air mixtureIgnition
timingSpark plug
cable
LengthLongSmallNormalLowRichAdvancedLeak
ShortLargeLarge wearHigh LeanRetardedHigh
resistance
HeightHighLargeLarge wearHighLeanRetardedHigh
resistance
LowSmallNormalLow RichAdvancedLeak
SlopeLargePlug is fouled−−−−
Point B: Number of v i bra t ion in red uction vi bra t ion sec tion (Refer to a bnormal wavefo r m examp l e 5)
Number of vibrationsCoil and condenser
3 or moreNormal
Except aboveAbnormal
Point C: Number of v i bra t ions a t beginnin g of dwell se ction (Refer to a bnormal wave form exam ple 5)
Number of vibrationsCoil
5 − 6 or higherNormal
Except aboveAbnormal
Point D: Ignition volt a g e height (distribution per each cylinder) s hows the follo wing tren ds.
Ignition
voltagePlug gapCondition of
electrodeCompression
forceConcentration
of air mixtureIgnition
timingSpark plug
cable
HighLargeLarge wearHighLeanRetardedHigh
resistance
LowSmallNormalLowRichAdvancedLeak

IGNITION SYSTEM
ENGINE ELECTRICAL16-36
EXAMPLES OF ABNORMAL WAVE-
FORMS
AKX00280
Example 1
•Wa ve ch aracte rist ics
Sp a r k line is high an d sh ort.
•Cause of pr oblem
Sp a r k plug ga p is too large.
AKX00281
Example 2
•Wa ve ch aracte rist ics
Sp a r k line is low and long, a nd is sloping.
Also, the secon d half of the sp ark line is distorted.
This cou l d be a result o f misfiring.
•Cause of pr oblem
Sp a r k plug ga p is too small.
AKX00282
Example 3
•Wa ve ch aracte rist ics
Sp a r k line is low and long, a nd is sloping. How-
ever, there is a l mo st no sp ark lin e distortion.
•Cause of pr oblem
Sp a r k plug ga p is fouled.
AKX00283
Example 4
•Wa ve ch aracte rist ics
Sp a r k line is high an d sh ort.
Diff icu l t to distingu ish be twe en this an d a bnormal
wa vefor m examp l e 1.
•Cause of pr oblem
Sp a r k plug cable is nearly fallin g of f (Ca u sing a
dual ignition ).
AKX00284
Example 5
•Wa ve ch aracte rist ics
No waves in wave damp i ng section.
•Cause of pr oblem
Layer short in ign i tio n coil.

IGNITION SYSTEM
ENGINE ELECTRICAL16-37
IGNITION COIL RELAY CHECK
M1163006500018
AC301727
2 1
3
4
AC304311AB
Battery
Ignition coil relay
Battery
voltageTerminal No.to
be connected
to testerContinuity test
results
Not applied1 − 4Open circuit
Connect
terminal No.2
and battery (+)
terminal.
Connect
terminal No.3
and battery (
−)
terminal.
1 − 4Less than 2
ohms

IGNITION SYSTEM
ENGINE ELECTRICAL16-38
IGNITION COIL
REMOVAL AND INSTALLATION <4G1>
M1163004000404
AC303965AB
11
5
2
2
10 ± 2 N·m
10 ± 2 N·m
25 ± 5 N·m
3
4
4
Removal steps
1.Ignition coil connector
2.Spark plug cable
3.Accelerator cable support clamp

4.Ignition coil
5.Spark plug
Removal steps (Continued)

IGNITION SYSTEM
ENGINE ELECTRICAL16-39
REMOVAL AND INSTALLATION <4G6>
M1163004000415
AC301786
10 ± 2 N·m
25 ± 4 N·m
5 4
2 2
3
3
4
AB
1
3.0 ± 0.5 N·m
Removal steps
1.Rocker cover centre cover
2.Ignition coil connector
3.Spark plug cable
4.Ignition coil
5.Spark plug
Removal steps (Continued)

IGNITION SYSTEM
ENGINE ELECTRICAL16-40
CAMSHAFT POSITION SENSOR
REMOVAL AND INSTALLATION
M1163003400443
AC303970AB
23
8.8 ± 1.0 N·m
N
1
<4G1>
AC301556
N
1
2
3
8.8 ± 1.0 N·m
AC
<4G6>
Removal steps
1.Camshaft position sensor
connector2.Camshaft position sensor
3.O-ring
Removal steps (Continued)

IGNITION SYSTEM
ENGINE ELECTRICAL16-41
CRANKSHAFT POSITION SENSOR
REMOVAL AND INSTALLATION <4G1>
M1163003500439
Pre-removal and Post-installation Operation
•Valve Timing Belt Removal and Installation (Refer to
GROUP 11A P.11A-33).
AC208380AB
12
11 ± 1 N·m
8.8 ± 1.0 N·m
Removal steps
1.Engine crank angle sensor
2.Crank angle sensor connector
bracket

IGNITION SYSTEM
ENGINE ELECTRICAL16-42
REMOVAL AND INSTALLATION <4G6>
M1163003500440
Pre-removal and Post-installation Operation
•Valve Timing Belt Removal and Installation (Refer to
GROUP 11C P.11C-35).
AC301612
8.8 ± 1.0 N·m
8
8.8 ± 1.0 N·m
9
1
22 ± 4 N·m
4
2
3
49 ± 9 N·m49 ± 9 N·m5
22 ± 4 N·m
3.0 ± 0.5 N·m
6
7
AC
Removal steps
1.Power steering pressure switch
connector
2.A/C compressor connector
3.A/C compressor connector clamp
<>4.Power steering oil pump assembly
5.Power steering oil pump bracket
6.Rocker cover centre cover
7.Engine crank angle sensor
connector
8.Engine crank angle sensor
9.Crank angle sensor connector
bracket
REMOV A L SER VICE POINT
<> POWE R STEERING OIL PUMP
ASSEMBL
Y REMOV A L
Remove the p o wer st eering oil pump assembly from
the bra
cke t with th e hose att a ched.
NOTE: Place the remo ved power st eering oil pump
assembly in a place where it will not be a hindrance
wh
en removing an d inst a lling an d secure it with a
cord or wire.